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1. 30 Jul '14 16:52
Hello.

Humans use:
Pawn = 1
Knight = 3
Bishop = 3
Rook = 5
Queen = 9 or 9.5
Bishop pair = +0.5

But I would like to know what relative point values do engines use (preferably strong engines, like Stockfish, Houdini, Rybka, Komodo, ...).

If the point value that the engine assign to the pieces depends on the position of the pieces on the board (for example a White Knight on a1 is only worth 2.7 but on e5 it's worth 3.3), than I would like to know the average point values of the pieces.

2.  BigDoggProblem
30 Jul '14 18:43
Originally posted by Marc Benford
Hello.

Humans use:...
Bishop pair = +0.5
That's a new one for me.
3.  Ponderable
chemist
30 Jul '14 20:00
I think the basic algorithms use the human values. And then points are added adn subtracted for position, but I am just a layman on that.
4. 30 Jul '14 21:25 / 1 edit
The points system really doesn't tell the full story. In a world without endgames, I would give the rook 3.5-4 points. I mean you can sac a rook for a knight in the first 15 moves and you wont really feel it until the ending. Same could be said for pawns.

The bishop pair is an advantage in theory, they cover each others weaknesses. But I have never seen anyone win a game because of a bishop pair. It might be +0.1 or +0.2, but taking it to +0.5 is way too far IMO.
5.  Paul Leggett
Chess Librarian
31 Jul '14 09:03 / 1 edit
Originally posted by KnightStalker47
The points system really doesn't tell the full story. In a world without endgames, I would give the rook 3.5-4 points. I mean you can sac a rook for a knight in the first 15 moves and you wont really feel it until the ending. Same could be said for pawns.

The bishop pair is an advantage in theory, they cover each others weaknesses. But I ha ...[text shortened]... me because of a bishop pair. It might be +0.1 or +0.2, but taking it to +0.5 is way too far IMO.
According to research by GM John Emms, the bishop pair tends to win 60-62% of the time. That's more valuable than being white.

I'm definitely on board with your opinion on rooks. Really the bottom line is that all piece and pawn values are relative to the position on the board.
6.  ChessPraxis
Cowboy From Hell
31 Jul '14 16:05
All piece point values are meaningless without considering their place on the board and interaction with other pieces. I do know one thing. I've noticed over the years players accessing the position (in OTB play) and looking at captured pieces. Pieces off the board have no value at all. An unstoppable pawn on the 7th rank has much more value than 1. A queen that is trapped and powerless can not have a value of 9.
7.  DeepThought
31 Jul '14 23:45
Originally posted by Marc Benford
Hello.

Humans use:
Pawn = 1
Knight = 3
Bishop = 3
Rook = 5
Queen = 9 or 9.5
Bishop pair = +0.5

But I would like to know what relative point values do engines use (preferably strong engines, like Stockfish, Houdini, Rybka, Komodo, ...).

If the point value that the engine assign to the pieces depends on the position of the pieces on the boa ...[text shortened]... ould like to know the average point values of the pieces.